Lightroom: LR4 - Exported GPS coordinates in exifs do divide by zero

Hi, I'm using Lightroom 4 to geotag some Photos. When I export jpegs those gps-data is written to the image's exif data. GPS-Coordinates in there are described as a fraction and it is defined, that for the value 0 the fraction 0/1 shall be used. Instead LR4 set those values to 0/0 which is undefined (even Adobe cannot devide by 0 legally ;-)
Regards,
Kai Scherrer